We study the effect of the spin dynamics on the phase dynamics in a ferromagnetic Josephson junction, which is composed of two superconductors separated by a ferromagnet. A new phenomenological model for the phase variable is proposed by including the spin dynamics excited by a ferromagnetic resonance (FMR) in the gauge invariant phase of s-wave SC's. We find that the I-V characteristics show step structures due to the FMR. The step amplitude induced by FMR in the I-V characteristic has a strong dependence on the geometry of the cross section in the junction.
- Ferromagnetic resonance
- Josephson effect
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering